♻️ [Test] Added new set of test cases to test JobEngine basic operations

[Coduz]

This PR adds a new set of test for JobEngine that will replace current tests on JobEngine

The aim of this PR is to improve speed and reliability of the tests on Job Engine
Related Issue
None

Description of the solution adopted
Added new test cases for Job Engine basic operations

Screenshots
None

Any side note on the changes made
None

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 171 lines in your changes missing coverage. Please review.

Project coverage is 16.72%. Comparing base (18b3991) to head (821c561).
Report is 10 commits behind head on develop.

Files with missing lines	Patch %	Lines
...kapua/service/job/steps/JobTargetServiceSteps.java	0.00%	43 Missing ⚠️
...lipse/kapua/service/job/steps/JobServiceSteps.java	0.00%	41 Missing ⚠️
...clipse/kapua/service/job/steps/JobEngineSteps.java	0.00%	28 Missing ⚠️
...e/kapua/service/job/steps/JobStepServiceSteps.java	0.00%	17 Missing ⚠️
...pua/service/device/registry/steps/BrokerSteps.java	0.00%	14 Missing ⚠️
...se/kapua/service/job/steps/JobServiceTestBase.java	0.00%	11 Missing ⚠️
...ua/service/job/steps/JobExecutionServiceSteps.java	0.00%	9 Missing ⚠️
...apua/service/device/registry/steps/KuraDevice.java	0.00%	8 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #4160      +/-   ##
=============================================
- Coverage      16.76%   16.72%   -0.05%     
  Complexity        22       22              
=============================================
  Files           2039     2039              
  Lines          52850    52978     +128     
  Branches        4441     4453      +12     
=============================================
  Hits            8860     8860              
- Misses         43587    43715     +128     
  Partials         403      403              

Files with missing lines	Coverage Δ
...apua/service/device/registry/steps/KuraDevice.java	0.00% <0.00%> (ø)
...ua/service/job/steps/JobExecutionServiceSteps.java	0.00% <0.00%> (ø)
...se/kapua/service/job/steps/JobServiceTestBase.java	0.00% <0.00%> (ø)
...pua/service/device/registry/steps/BrokerSteps.java	0.00% <0.00%> (ø)
...e/kapua/service/job/steps/JobStepServiceSteps.java	0.00% <0.00%> (ø)
...clipse/kapua/service/job/steps/JobEngineSteps.java	0.00% <0.00%> (ø)
...lipse/kapua/service/job/steps/JobServiceSteps.java	0.00% <0.00%> (ø)
...kapua/service/job/steps/JobTargetServiceSteps.java	0.00% <0.00%> (ø)